diff --git a/docs/en/api-guides/build-system.rst b/docs/en/api-guides/build-system.rst
index a9603b9a6ec6..3ca033ea2ea6 100644
--- a/docs/en/api-guides/build-system.rst
+++ b/docs/en/api-guides/build-system.rst
@@ -709,8 +709,6 @@ This is an equivalent to ``project_include.cmake`` for :ref:`component-configura
 
 Take care when adding configuration values in this file, as they will be included across the entire project configuration. Where possible, it's generally better to create a KConfig file for :ref:`component-configuration`.
 
-``project_include.cmake`` files are used inside ESP-IDF, for defining project-wide build features such as ``esptool.py`` command line arguments and the ``bootloader`` "special app".
-
 
 Wrappers to Redefine or Extend Existing Functions
 -------------------------------------------------
diff --git a/docs/zh_CN/api-guides/build-system.rst b/docs/zh_CN/api-guides/build-system.rst
index 7a7451bc5379..344c8782fbfc 100644
--- a/docs/zh_CN/api-guides/build-system.rst
+++ b/docs/zh_CN/api-guides/build-system.rst
@@ -709,8 +709,6 @@ KConfig.projbuild
 
 在此文件中添加配置时要小心，因为这些配置会包含在整个项目配置中。在可能的情况下，请为 :ref:`component-configuration` 创建 KConfig 文件。
 
-``project_include.cmake`` 文件在 ESP-IDF 内部使用，以定义项目范围内的构建功能，比如 ``esptool.py`` 的命令行参数和 ``bootloader`` 这个特殊的应用程序。
-
 
 通过封装对现有函数进行重新定义或扩展
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